In terms of tumor tissues, pancreatic cancer, head and neck cancer, skin cancer, urothelial cancer, cervical cancer, and stomach cancer showed moderate to strong cytoplasmic and/or membranous staining of RHOV, whereas RHOV staining was negative for glioma, carcinoid, renal cancer, prostate cancer, endometrial cancer, and lymphoma (Fig. 3B). Here, RHOV is linked to carcinoid tumor.